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Lydoog
Samba Member
Joined: October 08, 2015
Posts: 6
Location: Las Vegas NM
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 Posted: Thu Oct 08, 2015 1:55 pm Post subject: 1970 VW Campmobile Not Idling |
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Hey All, My Wife and I purchased a 1970 VW Campmobile about two years ago and we finally finished the restoration. Only thing I have not been able to correct is the bus to idle. I did a full tune up which include points, rotor, distributer cap, coil, plugs, and wires. I have also rebuilt the single carburator and played with the timing as well as the idle screw and still nothing. It runs great if you're constantly playing with the throttle but wont idle on its own. I found that if I keep the choke manually closed it'll idle on its own but is pretty gutless with the idle closed. When the idle is open it dies constantly. One last thing to mention is that it alway turns back on and isnt flooding or anything like that. Any Ideas on how to fix this??? I appreciate any ideas/comments. Thanks in advance!  |
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beatles4
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Joined: January 26, 2014
Posts: 400
Location: Miami
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busdaddy
Samba Member
Joined: February 12, 2004
Posts: 51153
Location: Surrey B.C. Canada, but thinking of Ukraine
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| Posted: Thu Oct 08, 2015 2:08 pm Post subject: |
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Is the solenoid on the left of the carb connected and does it click when you pull the wire off (key on)?
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wcfvw69 
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Joined: June 10, 2004
Posts: 13389
Location: Arizona
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| Posted: Thu Oct 08, 2015 3:43 pm Post subject: |
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| busdaddy wrote: |
| Is the solenoid on the left of the carb connected and does it click when you pull the wire off (key on)? |
This ^^^ is what you need to check first. If the fuel cut off solenoid is working and clicking, you in all likelihood has some dirt in your idle circuit in the carb.
What carb make/model is it? Can you snap some pictures of the engine and the carb?
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wihr
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Joined: August 15, 2010
Posts: 344
Location: PORTLAND, OR
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| Posted: Thu Oct 08, 2015 4:51 pm Post subject: |
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Mine did the same about twenty-six years ago. At the time it was cheaper to swap carburetors than to have the carb rebuilt.
WW
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1970 Campmobile "Van Ordinaire"
2009 Lincoln Town Car "Behemoth"
1969 Lambretta 150 DL "Nina"
1962 Matchless G 12 CS 650cc |
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busdaddy
Samba Member
Joined: February 12, 2004
Posts: 51153
Location: Surrey B.C. Canada, but thinking of Ukraine
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| Posted: Thu Oct 08, 2015 5:08 pm Post subject: |
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| wihr wrote: |
Mine did the same about twenty-six years ago. At the time it was cheaper to swap carburetors than to have the carb rebuilt.
WW |
26 years ago good used carbs almost grew on trees, now not so much. And new carbs are trash right out of the box so that's not an option.
If it's not a missed wire or a vacuum leak send the carb to Tim (Volkzbitz) for some lovin', it comes back like you'd expect a new Solex to work and the price is better than the sketchy new Chinese repro. If the base number doesn't jive with your application see if he can find you the correct one, the difference is subtle but sublime.
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Rust NEVER sleeps and stock never goes out of style.
Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
Stop dead photo links! Post your photos to The Samba Gallery!
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kreemoweet
Samba Member
Joined: March 13, 2008
Posts: 3899
Location: Seattle, WA
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| Posted: Thu Oct 08, 2015 5:41 pm Post subject: |
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| Lydoog wrote: |
| Any ideas . . . |
Get a manual for your bus (Bentley would be best) and follow the directions for the carb you have on the engine.
Telling us you have a '70 bus doesn't mean very much these days. It's been Mix'N'Match with these engines for the last 45 years. We have no idea
what you might be working with, and you didn't let us in on the secret. Such information is CRUCIAL to getting meaningful advice.
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Dana Champion
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Joined: July 06, 2012
Posts: 633
Location: Ventura County, CA
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| Posted: Thu Oct 08, 2015 9:45 pm Post subject: |
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Lydoog,
Welcome to the samba.
If your bus is sporting the correct carb for 1970, it is a Solex 30 PICT 3.
It has an electromagnetic cutoff solenoid on the generator/alternator side of the carb. This solenoid has 12v coming from the coil, as well as 12v to the electric choke. Are these intact and functioning ?
Here are a couple pictures of mine. I also have a '70 Campmobile
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Lydoog
Samba Member
Joined: October 08, 2015
Posts: 6
Location: Las Vegas NM
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| Posted: Fri Oct 09, 2015 9:30 am Post subject: |
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Thanks Guys! Sorry for the lack of info!
First off
| Quote: |
Did you rebuild the carb or did you have someone else
rebuild it? Was the carb rebuild just a generic replacing of gaskets? |
I rebuilt it myself and it was a full kit replacing the float,needles, accelerator pump, jets, and gaskets.
| Quote: |
| Is the solenoid on the left of the carb connected and does it click when you pull the wire off (key on)? |
yup Ive got it connected and it does click when I pull the wire or turn the ignition off/on
| Quote: |
This ^^^ is what you need to check first. If the fuel cut off solenoid is working and clicking, you in all likelihood has some dirt in your idle circuit in the carb.
What carb make/model is it? Can you snap some pictures of the engine and the carb? |
The solenoid is working...What do you mean dirt? In the solenoid??? That is the only part of the carb that I didn't touch... I have the Solex 30 PICT 3 like the one in Dana Champions post.
| Quote: |
| If it's not a missed wire or a vacuum leak send the carb to Tim (Volkzbitz) for some lovin', it comes back like you'd expect a new Solex to work and the price is better than the sketchy new Chinese repro. If the base number doesn't jive with your application see if he can find you the correct one, the difference is subtle but sublime. |
I have tried capping the open vaccum ports and have checked the connected ones for leaks. they seem fine...Thanks for the info.
| Quote: |
Get a manual for your bus (Bentley would be best) and follow the directions for the carb you have on the engine.
Telling us you have a '70 bus doesn't mean very much these days. It's been Mix'N'Match with these engines for the last 45 years. We have no idea
what you might be working with, and you didn't let us in on the secret. Such information is CRUCIAL to getting meaningful advice. |
Sorry for not clarifing the specs... hopefully things will be a little clearer now.Thanks
| Quote: |
Lydoog,
Welcome to the samba.
If your bus is sporting the correct carb for 1970, it is a Solex 30 PICT 3.
It has an electromagnetic cutoff solenoid on the generator/alternator side of the carb. This solenoid has 12v coming from the coil, as well as 12v to the electric choke. Are these intact and functioning ?
Here are a couple pictures of mine. I also have a '70 Campmobile
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Thanks for the pics...Yes that is exactly my carb and the wire is coming off the coil to the electric choke as well as the solenoid. I hear the solenoid click so I am assuming that they are functioning.
Thanks again to everyone...Any further advice would be greatly appreciated! Thanks in advance! |
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beatles4
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Joined: January 26, 2014
Posts: 400
Location: Miami
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| Posted: Fri Oct 09, 2015 6:14 pm Post subject: |
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I would remove the intake piping (black plastic tube) and put your phone with the flash on and take a video of the choke to make sure that the electronic solenoid is moving things as it should.
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